test: test the XML module functionalities, parsing, error reporting and returned document

Author: Harrison Ifeanyichukwu

tests/XMLTest.php

@@ -0,0 +1,56 @@
+<?php
+declare(strict_types = 1);
+
+namespace Forensic\FeedParser\Test;
+
+use Forensic\FeedParser\XML;
+use PHPUnit\Framework\TestCase;
+
+class XMLTest extends TestCase
+{
+    private $_xml = null;
+
+    public function setup()
+    {
+        $this->_xml = new XML();
+    }
+
+    public function testInitialState()
+    {
+        $this->assertSame(false, $this->_xml->status());
+        $this->assertNull($this->_xml->document());
+    }
+
+    public function testErronousDocumentParse()
+    {
+        $xml = <<<'XML'
+            <?xml version='1.0' standalone='yes'?>
+            <movies>
+                <movie>
+                    <titles>PHP: Behind the Parser</title>
+                </movie>
+            </movies>
+XML;
+        $this->_xml->parse($xml);
+        $this->assertGreaterThan(0, count($this->_xml->errors()));
+        $this->assertFalse($this->_xml->status());
+        $this->assertNull($this->_xml->document());
+    }
+
+    public function testCorrectDocumentParse()
+    {
+        $xml = <<<'XML'
+            <?xml version='1.0' standalone='yes'?>
+            <movies>
+                <movie>
+                    <titles>PHP: Behind the Parser</titles>
+                </movie>
+            </movies>
+XML;
+        $this->_xml->parse($xml);
+
+        $this->assertEquals(0, count($this->_xml->errors()));
+        $this->assertTrue($this->_xml->status());
+        $this->assertInstanceOf('DOMDocument', $this->_xml->document());
+    }
+}